Piston-ring vacuum oil relief



Jan. 6. 1925. 1,522,341

E. F. SUTTON PISTON RING VACUUM OIL RELIEF Filed Dec. 11, 1925 Far-.2

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Patented clan. @256 v 7 surplus oil as may have succeeded in. entersuress rTs-s assess mwnnn r, summon, or san rnmersco, cmonnm.

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, Application. flledflieceniber-ll, "1923. Serial No. 679,886.

To all whom it may concern-.-

Be it known that rnnwnw mesa;

. a citizen of the United States, and a resident of the city and countyof San"F ranc i sco, and State-of California, have invented certain newand useful Improvements in Pisfollowing is a specification. 1

The, present invention relates to lmprovements in plstonrin'gs fornternal'combustion engines, and has for a principal object. theprovision of means for inducing such ing the cylinder from thecrank-shaft case to flow into prepared reservoirs and recesses fromwhich it. is thereafter forced to return to the crank-shaftcaser In theaccomplishment of thegabove purpose, reservoirs, recesses and conduitsare created, through the medium of the-piston ring. and the pistongroove bearing it,'uponwhich alternate negative andposltive pressuresare brought tobear'through therecip ductive' and expulsive actions. areinduced that cause the surplusoil accumulations shaft case. 7 y

Structurally, the-piston ring body carries exteriorly andcircumferential-1y a. chamfer I of plane or grooved surface,and,.interiorly,

a series of recesses of, preferably, cone-shape, having for theirpurpose, in conjunction with the walls of the piston-ring groove, theformation of boundries for such reservoirs and recesses as mayberequired to meetvar'ying conditions, as well as a plurality of conduits,or passages, extending obliquely from the chamfered surface through thebody to the interior surface of the piston-ring.

Economically considered, the piston'ring thus constructedefiects a heavysaving in. the amount of lubricant required,- removes of the ring.

I the cause of spark-plug fouling and with it also 1 that of all carbondeposits, while in no Wise'a-ifecting or impairing the compresslon.

i In the accompanying drawings forming a v part [of this specification,similar reference ton-Ring Vacuum Oil Beliefs, of which the.

line.2- 2 of FigureL; Figure 3 is a section on line of Figure 4; andFigure 4; is a bottoinplan of the ring.

Referring more particularly to the draw chamfered ,or beveled, surface,4 a series of sections recessed'from'inner surface-of ring 'lhe'installation of the ring in its groove "requires that .the' .chamferedportion be rocal act on of the'piston,1wherethrough in-f ing's, 1indicates the body. of the ring,-2 a step-opening in the body thereof,3. the til placeddownward, otherwise the piston will freeze through lackoflubrication-a condition impossible if rings be placed as re}- quired.

."Having thus described my invention, 1

claim, and desire to secure-by Letters Patent:

1. A piston ring having its outer face.

bevelled on the lower edge thereof, said ring. having a plurality. ofoil accumulating recesses on the interior thereof and a plurality ofoildraini-ng channels extending from the bevelled edge upwardly to theinterior 1 23A piston rlng having a plurality of oil accumulatingrecesses on the, inner face thereof and a plurality'of oil drainingchannels extending downwardly through the ring" from the inner facethereof'to the exterior, said recesses being in spaced relation to saidchannels I EDWARD F. SUTTON.

